Krüss surface tension measurement instruments

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Krüss is a specialist in interfacial chemistry and a supplier of measuring instruments for surface and interfacial tension. The need to perform analysis for research and QA is dependent on ‘what’ sample parameter needs to be measured. The ‘how’ to measure is dependent on the samples’ presentation. Which instrument to use is dependent on the understanding of the ‘what and how’.

The ring method is a widely used technique for measuring static surface tension and static interfacial tension between a liquid and gas (usually air) above the sample. Krüss has a range of instruments which work on the Du Noüy and Wilhelmy plate techniques. The K100, K20 and K11 offer a range of functionalities based on the sensitivity of the microbalance for the model of choice.

When the need is for dynamic test methods such as measuring high-speed events, a bubble pressure tensiometer is a suitable instrument. The BP100 measures dynamic surface tension by analysing the mobility of surfactants, thus enabling high-speed processes such as spraying, coating, printing and cleaning to be optimised. The BP50 has been specially developed for use in QA.

The analysis of coating and wetting processes is important in all aspects in the manufacture of modern goods for aesthetics and functionality. The contact angle of liquid and a substrate interaction gives valuable data for understanding how to develop manufacturing processes to turn materials into commercial goods. The DSA100 provides solution-oriented support in the investigation and optimisation of wetting and adhesion behaviour. The range also includes the DS25 and DSA30 for the diversity of applications.